基于<aop:aspect>与<aop:advisor>的区别

public interface Sleepable {
    public void sleep();
}
public class Human implements Sleepable {
    @Override
    public void sleep() {
        System.out.println("我要睡觉了！");
    }
}

//定义通知
public class SleepHelper implements MethodBeforeAdvice,AfterReturningAdvice{
    @Override
    public void before(Method arg0, Object[] arg1, Object arg2)
            throws Throwable {
        System.out.println("睡觉前要脱衣服！");
    }
    @Override
    public void afterReturning(Object arg0, Method arg1, Object[] arg2,
            Object arg3) throws Throwable {
        System.out.println("起床后要穿衣服！");
    }
}

//aop配置
<bean id="sleepHelper" class="com.ghs.aop.SleepHelper"></bean>
<aop:config>
    <aop:pointcut expression="execution(* *.sleep(..))" id="sleepPointcut"/>
    <aop:advisor advice-ref="sleepHelper" pointcut-ref="sleepPointcut"/>
</aop:config>
<bean id="human" class="com.ghs.aop.Human"/>

//定义切面
public class SleepHelperAspect{
    public void beforeSleep(){
        System.out.println("睡觉前要脱衣服！");
    }
    public void afterSleep(){
        System.out.println("起床后要穿衣服！");
    }
}

//aop配置
<bean id="sleepHelperAspect" class="com.ghs.aop.SleepHelperAspect"></bean>
<aop:config>
    <aop:pointcut expression="execution(* *.sleep(..))" id="sleepPointcut"/>
    <aop:aspect ref="sleepHelperAspect">
        <!--前置通知-->
        <aop:before method="beforeSleep" pointcut-ref="sleepPointcut"/>
        <!--后置通知-->
        <aop:after method="afterSleep" pointcut-ref="sleepPointcut"/>
    </aop:aspect>
</aop:config>
<bean id="human" class="com.ghs.aop.Human"/>

public class TestAOP {
    public static void main(String[] args) {
        method1();
//      method2();
    }
    private static void method1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext1.xml");
        Sleepable sleeper = (Sleepable) context.getBean("human");
        sleeper.sleep();
    }
    private static void method2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext2.xml");
        Sleepable sleeper = (Sleepable) context.getBean("human");
        sleeper.sleep();
    }

<!-- 会重复读，不会脏读事务 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="*" timeout="120" propagation="REQUIRED" rollback-for="Exception" />
    </tx:attributes>
</tx:advice>
<aop:config proxy-target-class="true">
    <aop:pointcut id="txPointCut" expression="..."/>
    <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut" />
</aop:config>